Ingredient compatibility

BHA (Salicylic Acid) + AHA (Alpha Hydroxy Acid): Are They Compatible?

Caution

Information from the FDA label and published sources. Not medical advice.

Why

AHA works on surface skin cells, BHA penetrates oily pores. Some formulas combine them intentionally (e.g. Paula's Choice BHA) but DIY layering two separate acid products usually over-exfoliates, especially on sensitive skin.

Usage guidance

Use only one per day, or stick to a professionally-formulated combo product. Always follow with barrier support and SPF.

Check your full routine or run a single check

Educational content — not medical advice. Always check with your dermatologist for ingredient-specific questions.